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Calcium bisulfite

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Identification
Molecular formula
Ca(HSO3)2
CAS number
13780-03-5
IUPAC name
calcium;hydrogen sulfite
State
State

Calcium bisulfite can be found in both liquid and solid states. The liquid form is more common, usually appearing as a clear, colorless to pale yellow solution. The solid form can either be crystalline or granular.

Melting point (Celsius)
0.00
Melting point (Kelvin)
0.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
202.22g/mol
Molar mass
202.2220g/mol
Density
0.0000g/cm3
Appearence

Calcium bisulfite typically appears as a clear, colorless or pale yellow liquid. If in solid form, it appears as white to slightly yellow crystalline powder or granules.

Comment on solubility

Solubility of Calcium Hydrogen Sulfite

Calcium hydrogen sulfite, with the chemical formula Ca(HSO3)2, exhibits interesting solubility characteristics that are important in various chemical and industrial applications. Here are some key points regarding its solubility:

  • Water Solubility: Calcium hydrogen sulfite is generally soluble in water. This solubility is influenced by temperature, with higher temperatures often leading to increased solubility.
  • Effect of pH: The solubility can also be affected by the pH of the solution. In more acidic conditions, the solubility tends to increase, making it more effective in certain reactions.
  • Common Usage: Due to its solubility, Ca(HSO3)2 is commonly used as a reducing agent in the pulp and paper industry, where it helps to bleach wood pulp.
  • Limited Solubility in Organic Solvents: Unlike many inorganic salts, calcium hydrogen sulfite shows very low solubility in organic solvents, which limits its use in organic synthesis.

In summary, calcium hydrogen sulfite is a versatile compound with pronounced water solubility and specific interactions with pH levels that enhance its effectiveness in industrial applications. Its behavior in solution plays a crucial role in its applications, particularly in the chemical processing industries.

Interesting facts

Interesting Facts about Calcium Hydrogen Sulfite

Calcium hydrogen sulfite, also known as calcium bisulfite, is a fascinating compound that plays a significant role in various chemical processes and industries. Here are some intriguing aspects to consider:

  • Biological Importance: Calcium hydrogen sulfite is often utilized in biological applications, particularly in the preservation of food products, thanks to its antimicrobial properties.
  • Industrial Use: This compound finds extensive use in the paper industry, primarily for the production of wood pulp. It acts as a reducing agent in the sulfite process.
  • Environmental Chemistry: Calcium hydrogen sulfite can also be involved in flue gas desulfurization processes, which help mitigate sulfur dioxide emissions from power plants.
  • Water Treatment: It plays an essential role in water treatment facilities by aiding in the removal of impurities and pathogens from water sources.
  • Educational Value: Understanding this compound provides valuable insights into acid-base chemistry and the behavior of sulfite ions in various reactions.

One of the most notable features of calcium hydrogen sulfite is its role as a buffer in biological systems, maintaining the pH levels essential for various enzymatic activities. As stated by researchers, “The balance of calcium and sulfite in biological systems is crucial for optimal performance, which reflects the intricate interplay between elements in chemistry.”

In addition to its practical applications, calcium hydrogen sulfite is a prime example of how simple chemical compounds can have far-reaching implications in both industry and nature. Its versatility showcases the importance of compounds in advancing technology and improving human health.

Synonyms
CALCIUM BISULFITE
Calcium hydrogen sulfite
13780-03-5
Calcium hydrogensulphite
Sulfurous acid, calcium salt (2:1)
UNII-SNM7K02JP2
EINECS 237-423-7
SNM7K02JP2
Sulfurous acid calcium salt (2:1)
INS NO.227
CALCIUM HYDROGEN SULPHITE
DTXSID50889620
INS-227
E-227
DTXCID201028873
237-423-7
calcium;hydrogen sulfite
Calcium sulfite (Ca(HSO3)2)
Calciumhydrogensulfit
UN1923
SCHEMBL250500
SCHEMBL2370198
LVGQIQHJMRUCRM-UHFFFAOYSA-L
Calcium dithionite or calcium hydrosulfite
DB-230067
Q419619
Calcium dithionite or calcium hydrosulfite [UN1923] [Spontaneously combustible]